Reduced signal to noise ratio array coil image
OwnerJoseph V. Hajnal, Mark Bydder +1inventors
InventorsJoseph V. Hajnal, Mark Bydder, David J. Larkman
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Abstract
Better signal-to-noise ratio is obtained when combining the images from an array coil used in magnetic resonance imaging apparatus by using the relative sensitivity of each coil obtained by division of the images from each coil on a pixel-by-pixel basis.
Claims14
Magnetic resonance imaging apparatus comprising means for exciting magnetic resonant (MR) active nuclei in a region of interest, means for creating magnetic field gradients in a phase-encode direction for spatially encoding the excited MR active nuclei, the number of phase-encode gradients producing a field of view corresponding to the region of interest, an array of at least two r.f. receive coils for receiving data from the region of interest, and means for producing an image by combining signals from the coils of the array, using the relative sensitivity of each coil.
A method of magnetic resonance imaging comprising exciting magnetic resonant (MR) active nuclei in a region of interest, creating magnetic field gradients in a phase-encode direction for spatially encoding the excited MR active nuclei, the number of phase-encode gradients producing a field of view corresponding to the region of interest, receiving r.f. data from the region of interest using an array of at least two r.f. receive coils, and producing an image by combining signals from the coils of the array using the relative sensitivity of each coil.
Dependencies are inferred from the claim text.